Question

May you please help me. I am having trouble understanding how to do it.

Answer 1

`\text{Let Zoe's height be x}`

Claire's is twice as tall as Zoe implies that:

`\text{Claire's height = 2x}`

The sum of their ages is 108 inches.

Thus, we have:

`\begin{gathered} x+2x=108 \\ 3x=108 \\ x=(108)/(3) \\ x=36 \end{gathered}`

Therefore, Zoe's height is 36 inches while Claire's height is 72 inches